Torque override threaded locking cap
US4280347A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1979 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Dec 7, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5571
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A locking cap for a threaded filler neck includes a closure member for engaging and closing the neck, a shell providing a hand grip and including a key-actuable lock, and a race disposed for rotation between the shell and closure. The race includes axially inwardly opening pockets, and the closure includes flexible pawl fingers for engaging the pockets to provide a driving connection between the closure and race which is positive in the cap-removal direction and torque-limited in the cap-advancing direction. The race also includes a set of peripherally spaced, radially inwardly projecting teeth. A lock-controlled bolt member mounted in a hub which is connected for rotation with the shell is movable by the lock to a cap-removal position. The bolt member engages driving teeth provided within the closure member. The driving teeth are formed such that rotation of the shell in the cap-advancing direction, after the lock has been returned to the cap-locking position, cams the bolt out of engagement with the driving teeth. The hub also provides a pair of flexible drive fingers for engaging the peripherally spaced and radially inwardly projecting teeth to provide a driving connection betwe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.